Oil separator



sept. 4, 1921s.4 1,682,757

R. Ac. HOPKINS OIL SEPARATOR Sept. 4, 1928.

R. c. HoPKlYNs OIL SEPARATOR Filed July 27, 1925 2 Sheets-Sheet 2 a 37mm/Mio@ atented Sept. y4, '19128.`

NiTED ST il naar e. nora, or Annen, omo.

Application illed duly 2?, 1925. Serial No. 46,378.

therein, an oil outlet, controlled by a needle valve, tangentiall communicating with the upper portion o the separating tank adejacent to the periphery of vsaid screen.

An embodiment of the invention thus set forth in general terms is illustrated in the accompanying drawings, in which,

Figure 1 is a vertical longitudinal section through the improved separating tank;

Fig. 2, a transverse section on the line 2 2, rig. i;

Fig. 3, a transverse section on the line 3 3, Fig. 1, and

Fig. 4, a fragmentary section on the line lil- 4, Fig. 2. i ,l

Similar numerals of reference indicate correspon-ding parts throughout the' drawhe separator comprises a c lindrical tark 1-having the internally threa ed u per en cham r 3 at its lower end, preferably provided with the dished bottom 4' provided with the centrally located drain cock 5.

The oil inlet pipe 6, leading from an suitable source of supply, enters the enlar e chamber Sat a tan ent, as best illustrate Vin Fig. 3, the threade extremity 7 of said pipe being located in the internally threaded tan ential boss 8 provided in the side wall of t e tank.

The cap 9, provided with the threaded an-v nular flange 10,is connected to the upper end of the tank 1 and carries the depending 'axial rod 11. Thecylindrical strainer 12 is fixed in any well known manner within. the annular Harige 10 of 'the ca and extends downward into the upper portion of the enlarged chamber 3, spaced rows of narrow ortion 2 and the enlarged 'sett ing slots 13 being provided in the walls of said strainer.

A piston 14@ is slidably mounted upon the the lower peripheral edge of said piston being beveled as shown at 16. A coil s ring 17 surrounds the rod 11, the upper end t ereof .being received within the reduced socket lS-in thefcap, and the lower end bearing upon the piston mand tending to urge the same toward the shoulder or nut 19 adjustably mounted upon the lower end of the rod.

The oil outlet pipe 20 communicates with the upper portion of the tank, bein located tangentially thereto, and prefera 1y provided with the threaded extremity 21 received `in tli'e internally threaded tan ential boss 22 formed upon the exterior o lthe tank near the upper end thereof. The central portion of this boss is provided with an opening 23 communicating with the interior of the tank, a threaded valve stem 2,4 being,

mounted within the internally threaded bore 25 in the boss and having a needle valve 26, preferably beveled as illustrated in Fig. 2, upon its inner end for co-operation with the valve seat bushing 27.

The usual packing gland 28 may be con- (lll nected to the externally threaded nipple 29,

of the boss 22, and provided with suitable packing 30 to prevent leakagearound the valve stem, a hand wheel31 being provided upon the outer end of, the stem for the 'purpose-of operating the valve.

As the 'oil is admitted to the chamber 3,

under pressure from the pipe 6, i",fwill be 1 carried around the tank iny a swirling movement, centrifugal force throwing theiwater toward the outside and permitting it to settle b gravity into the settlin chamber 3 from vv ich it ma be drained 0% from time to time through t e drain cock 5.

As the 'Huid rises in the tank it will raise the piston 14 in the strainer cylinder against the pressure of the (spring 17 an as it is swirledgthrough sai foreign matter orssediment will be strained through the narrow slots 13 therein. the piston 14 moves downward in the strainer cylinder the beveled edge 16 thereof will scrape any deposit of sediment or foreign matter from the inside of clearing the slots 13.

strainer any..

msl

the strainer,

It should he, of course, understood that although vthe spring 17 is shown in the drawings for moving the piston 16 downpiston slidable upon the rod and having a beveled edge for contact with the interior of the cylinder, and an oil outlet pipe communicating with the upper portion of the tank at a tangent thereto.

2. An oil separator including a cylindrie tank, an oil inlet pipe entering the lower portion of the tank at a tangent thereto, a perforate cylinder suspended withinY the tank, an axial rod within the cylinder provided with a shoulder at lits lower end, a piston slidable upon the rod and having a pesant? beveled edge for Contact With the interior of the cylinder, a coil spring surrounding the rod and hearing upon the piston, and an oil outlet pipe communicating with the vupper portion of the tank at a tangent thereto.

3. An oil separator including a cylindric tank, an oil inlet pipe entering the lower portion of the tank, a perforate cylinder suspended within the tank, a piston slidable within the perforate cylinder and arranged to be raised therein by pressure of the oil Within the tank, means for loweringr the piston in the tank against the oil pressure, and an oil outlet pipe communicating with the upper portion of the tank.

4. An oil separator including a oylindiic tank, an oil inlet pipeentering the lower portion of the tank, a perforate cylinder suspended within the tank, an n axial rod within the cylinder provided with av shoulder at its lower end, a piston slidahle upon the rod and having a peripheral edge for contact with the interior of the cylinder, and an oil outlet pipe communicating with the upper portion of the tank.

In testimong7 that I claim the above, I have hereunto subscribed mv name.

ROBT. C. HOPKINS. 

